There are many ways to create such format, and quite easily - using RDF plus some suitable ontology, etc. In fact, DOAC ontology is meant exactly for that, and

There are many ways to create such format, and quite easily - using RDF plus some suitable ontology, etc. In fact, DOAC ontology is meant exactly for that, and I am sure there are 3-4 alternative ones too, and making a process to parse it would be relatively trivial. Why it's not done? My guess it twofold. First, none of the resume sites is even remotely interested in data portability - they want you to use their site and their site alone. Why make it easier to go to the competitor? Second, despite all efforts, the usage of semantic web paradigms and all the automatic data processing that it enables is still minuscule outside of very niche communities - so most people aren't even aware of these solutions, and if nobody uses them, then nobody supports them, forming a vicious circle.